On Wed, 26 Mar 2014 09:19:14 -0400, "rw...@ropeguru.com" said:

> Again comparing something like factual numbers of IPv6 addresses the 
> the very fuzzy math of guessing how many atoms there are is very silly 
> indeed.
A bit of thought will show that you can probably compute this based on our
estimage of the mass of the earth, which is known to be 5.97219 × 10^24 kg,
and an estimate of what elements the mantle and core are made up of.

http://education.jlab.org/qa/mathatom_05.html

I don't think that 3 significant digits counts as "very fuzzy math"....

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